//面包屑--组件
<template>
  <el-breadcrumb class="app-breadcrumb"
                 separator="/">
    <transition-group name="breadcrumb">
      <el-breadcrumb-item v-for="(item,index)  in levelList"
                          :key="item.path">
        <span v-if='item.redirect==="noredirect"||index==levelList.length-1'
              class="no-redirect">{{item.meta.title}}</span>
        <router-link v-else
                     :to="item.redirect||item.path">{{item.meta.title}}</router-link>
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>

<script>
export default {
  mounted () {
    this.getBreadcrumb();
  },
  data () {
    return {
      levelList: null
    };
  },
  watch: {
    $route () {
      this.getBreadcrumb();
    }
  },
  methods: {
    getBreadcrumb () {
      let matched = this.$route.matched.filter(item => item.name);
      const first = matched[0];
      if (first && first.name !== "home") {
        matched = [{ path: "/", meta: { title: "首页" } }].concat(matched);
      }
      this.levelList = matched;
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  display: inline-block;
  font-size: 14px;
  line-height: 50px;
  margin-left: 10px;
  .no-redirect {
    color: #97a8be;
    cursor: text;
  }
}
</style>
